redirect script output from within the script to log file and screen at the same time

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I've been trying to redirect and append my script output from within the script to a log file and the screen at the same time. I've tried various guide I could find but none was successful.

My script looks something like this;


#!/bin/bash
log_file=/var/log/test.log
exec 2>&1 | tee -a $log_file

do something...

cleanup ()

 do some cleanup...


int_handler()

 echo "Interrupted."
 cleanup
 exit 1

trap 'int_handler' INT

read -r -p "Do you want continue the process now? [y|n] : " response
if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]] 
then
 do this...
 exit 0
else
 do that...
 exit 0
fi

while true
do
 sleep 1
done
exit 0

each time I run it, it appears that the redirection only capture the last screen output session.

Any help would be greatly appreciated.

Thanks in advance.

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

What do you mean by "last screen output session"? A more minimal example would help. Also, read man stdbuf.
â€“Â Ferenc WÃ¡gner
Sep 29 '17 at 15:00

add a commentÂ |Â

up vote
0
down vote

favorite

I've been trying to redirect and append my script output from within the script to a log file and the screen at the same time. I've tried various guide I could find but none was successful.

My script looks something like this;


#!/bin/bash
log_file=/var/log/test.log
exec 2>&1 | tee -a $log_file

do something...

cleanup ()

 do some cleanup...


int_handler()

 echo "Interrupted."
 cleanup
 exit 1

trap 'int_handler' INT

read -r -p "Do you want continue the process now? [y|n] : " response
if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]] 
then
 do this...
 exit 0
else
 do that...
 exit 0
fi

while true
do
 sleep 1
done
exit 0

each time I run it, it appears that the redirection only capture the last screen output session.

Any help would be greatly appreciated.

Thanks in advance.

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

What do you mean by "last screen output session"? A more minimal example would help. Also, read man stdbuf.
â€“Â Ferenc WÃ¡gner
Sep 29 '17 at 15:00

add a commentÂ |Â

up vote
0
down vote

favorite

I've been trying to redirect and append my script output from within the script to a log file and the screen at the same time. I've tried various guide I could find but none was successful.

My script looks something like this;


#!/bin/bash
log_file=/var/log/test.log
exec 2>&1 | tee -a $log_file

do something...

cleanup ()

 do some cleanup...


int_handler()

 echo "Interrupted."
 cleanup
 exit 1

trap 'int_handler' INT

read -r -p "Do you want continue the process now? [y|n] : " response
if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]] 
then
 do this...
 exit 0
else
 do that...
 exit 0
fi

while true
do
 sleep 1
done
exit 0

each time I run it, it appears that the redirection only capture the last screen output session.

Any help would be greatly appreciated.

Thanks in advance.

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

I've been trying to redirect and append my script output from within the script to a log file and the screen at the same time. I've tried various guide I could find but none was successful.

My script looks something like this;


#!/bin/bash
log_file=/var/log/test.log
exec 2>&1 | tee -a $log_file

do something...

cleanup ()

 do some cleanup...


int_handler()

 echo "Interrupted."
 cleanup
 exit 1

trap 'int_handler' INT

read -r -p "Do you want continue the process now? [y|n] : " response
if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]] 
then
 do this...
 exit 0
else
 do that...
 exit 0
fi

while true
do
 sleep 1
done
exit 0

each time I run it, it appears that the redirection only capture the last screen output session.

Any help would be greatly appreciated.

Thanks in advance.

debian

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

edited Sep 29 '17 at 14:57

Ferenc WÃ¡gner

2,774920

asked Sep 25 '17 at 22:38

user3289583

asked Sep 25 '17 at 22:38

user3289583

asked Sep 25 '17 at 22:38

user3289583

What do you mean by "last screen output session"? A more minimal example would help. Also, read man stdbuf.
â€“Â Ferenc WÃ¡gner
Sep 29 '17 at 15:00

add a commentÂ |Â

What do you mean by "last screen output session"? A more minimal example would help. Also, read man stdbuf.
â€“Â Ferenc WÃ¡gner
Sep 29 '17 at 15:00

What do you mean by "last screen output session"? A more minimal example would help. Also, read man stdbuf.
â€“Â Ferenc WÃ¡gner
Sep 29 '17 at 15:00

add a commentÂ |Â

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